
ModsJava
Registry Blocker
Blocking registries' entries from registration. Free Minecraft Java mod for 1.20.1, 1.21.1, 26.1.
I don't know my version or loader
Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.
No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.
Change config in config/registry-blocker.json.
The key is registry identifier, the value is entry identifier.
Config should reload when reloading data packs.
There will be error in latest.log if the registry is referenced by another entry.
Recommend use with https://modrinth.com/mod/data-dumper to dump matched registry with tag or regex. . Recommend use with https://modrinth.com/mod/mod-sets to disable the developing mods in the published pack.
Use Case
- Remove structures.
- Remove items that needn't in the pack.
- Disable structure sets and grouping all the structures in a few structure sets so that avoid overlapping.
Example
{
// Since https://github.com/misode/mcmeta/blob/data-json/data/minecraft/worldgen/structure_set/pillager_outposts.json#L6 is requiring this entry. The world won't load
"minecraft:worldgen/structure_set": [
"minecraft:villages"
],
"minecraft:block": [
"minecraft:redstone_wire"
]
}
Verified by MCModsHub
- Ships as registry-blocker-0.8.0.jar — drop this file into the mods folder
- Download size: 547 KB
- Download link checked 30 Aug 2026 — working
These come from our own check of the pack file, not from the source page.